Markdown rendering does not respect newlines in literal text

[David Thompson]

For an example of this problem, see ​http://media.dthompson.us/u/davexunit/m/signal-generator-in-action-d10c/. The code snippet in the description should have several newlines, but it has all been crammed together, making it harder to read.

[Loic Dachary]

For code formatting, prepend four space at the beginning of each line and they won't be wrapped together.

bin/python -m markdown <<EOF

(lambda ()

foo())

EOF
<pre><code>(lambda ()

foo())</code></pre>